Videokarma.org

Go Back   Videokarma.org TV - Video - Vintage Television & Radio Forums > Diagnostic & Test Equipment

Notices

We appreciate your help

in keeping this site going.
Reply
 
Thread Tools Display Modes
  #1  
Old 11-29-2015, 11:06 PM
Tubejunke's Avatar
Tubejunke Tubejunke is offline
VideoKarma Member
 
Join Date: Apr 2003
Location: Martinsville, VA
Posts: 1,823
I want to say that the unit hasn't been plugged in for years and a capacitor caused the resistor to overheat. Often after some time working capacitors will reform and work normally if they don't short or take out something expensive like a transformer. The best thing to do in all cases with old equipment is to bring them up in steps with a variable voltage source.

A Variac or equivalent and an isolation transformer are a must if you are going to work on electronics old or new.
__________________
"Face piles of trials with smiles, for it riles them to believe that you perceive the web they weave, and keep on thinking free"
Reply With Quote
  #2  
Old 12-01-2015, 09:33 AM
Findm-Keepm's Avatar
Findm-Keepm Findm-Keepm is offline
Followin' the Rules...
 
Join Date: Jun 2007
Posts: 2,857
R43 runs hot on my 467 - always has....

I have other problems with mine - each meter pulses while checking a CRT. I haven't recapped or done much troubleshooting. I upgraded to one of dad's 470s (he had EIGHT!), and have shelved the 467 for now.

My 467 came from a Public Surplus Auction - bought out an entire VoTech school's TV Electronics program, about 45 pieces of test equipment for ~$250, and the 467 was among all of the equipment.
__________________
Brian
USN RET 22YRS (Avionics/Cal)
CET-Consumer Repair and Avionics ('88)
"Capacitor Cosmetologist since '79"

When fuses go to work, they quit!
Reply With Quote
  #3  
Old 12-01-2015, 02:50 PM
Crist Rigott Crist Rigott is offline
VideoKarma Member
 
Join Date: Oct 2015
Location: Waxahachie, TX
Posts: 1,519
Quote:
Originally Posted by Findm-Keepm View Post
R43 runs hot on my 467 - always has....

I have other problems with mine - each meter pulses while checking a CRT. I haven't recapped or done much troubleshooting. I upgraded to one of dad's 470s (he had EIGHT!), and have shelved the 467 for now.

My 467 came from a Public Surplus Auction - bought out an entire VoTech school's TV Electronics program, about 45 pieces of test equipment for ~$250, and the 467 was among all of the equipment.
Brian,
Thanks. That's the info I was looking for. I did order all new E-caps and I'll replace them when they arrive later this week. I'll post an update when they are replaced.
Reply With Quote
  #4  
Old 12-03-2015, 01:31 AM
Crist Rigott Crist Rigott is offline
VideoKarma Member
 
Join Date: Oct 2015
Location: Waxahachie, TX
Posts: 1,519
I replaced all the E-caps tonight. R43 still runs hot. I got a service manual off the Internet and checked some voltages at some TP's. Most were a little low. After the recap, some stayed the same while others got a bit higher and some came right into spec. I put it all back together and touching the face, it's not even warm even thought R43 still is hot. BTW, in the service manual, it had a few calibrations to make and they all cal'd OK.

Now I need to get a CRT to test the tester!
Reply With Quote
  #5  
Old 02-23-2016, 10:10 PM
Crist Rigott Crist Rigott is offline
VideoKarma Member
 
Join Date: Oct 2015
Location: Waxahachie, TX
Posts: 1,519
Well I got a small color 9" TV and tested the CRT with my re-capped 467. The 467 showed the CRT to be very good. However, like a post or 2 above the needles "pulsed" while checking the emissions. Other than that all went well.

Thanks.
Reply With Quote
Audiokarma
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 05:27 AM.



Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2026, Jelsoft Enterprises Ltd.
©Copyright 2012 VideoKarma.org, All rights reserved.